From 8a9208612eec8ddae4c418485d848ecfa0613699 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Mon, 30 Oct 2023 22:12:14 +0100
Subject: Meta: Move kernel and userland to their own folders.

This is to allow both the kernel and the userland to share certain
header files and to make the folder structure a bit more clear.
---
 kernel/socket.h | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 kernel/socket.h

(limited to 'kernel/socket.h')

diff --git a/kernel/socket.h b/kernel/socket.h
new file mode 100644
index 0000000..bb278c1
--- /dev/null
+++ b/kernel/socket.h
@@ -0,0 +1,72 @@
+#ifndef SOCKET_H
+#define SOCKET_H
+#include <fs/fifo.h>
+#include <fs/vfs.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define AF_UNIX 0
+#define AF_INET 1
+#define AF_LOCAL AF_UNIX
+
+#define SOCK_DGRAM 0
+
+#define INADDR_ANY 0
+
+#define MSG_WAITALL 1
+
+typedef struct {
+  vfs_fd_t *ptr_socket_fd;
+  FIFO_FILE *fifo_file;
+
+  int domain;
+  int type;
+  int protocol;
+  void *child;
+
+  // UNIX socket
+  char *path;
+  vfs_fd_t *incoming_fd;
+} SOCKET;
+
+typedef struct {
+  char *path;
+  SOCKET *s;
+} OPEN_UNIX_SOCKET;
+
+typedef struct {
+  uint32_t address;
+  uint16_t port;
+  SOCKET *s;
+} OPEN_INET_SOCKET;
+
+typedef uint32_t in_addr_t;
+typedef uint16_t in_port_t;
+typedef unsigned int sa_family_t;
+typedef int socklen_t;
+
+struct sockaddr {
+  sa_family_t sa_family; /* Address family */
+  char *sa_data;         /* Socket address */
+};
+
+struct sockaddr_in {
+  sa_family_t sin_family;
+  union {
+    uint32_t s_addr;
+    uint8_t a[4];
+  } sin_addr;
+  uint16_t sin_port;
+};
+
+struct sockaddr_un {
+  sa_family_t sun_family; /* Address family */
+  char *sun_path;         /* Socket pathname */
+};
+
+OPEN_INET_SOCKET *find_open_udp_port(uint16_t port);
+int uds_open(const char *path);
+int socket(int domain, int type, int protocol);
+int accept(int socket, struct sockaddr *address, socklen_t *address_len);
+int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
+#endif
-- 
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